Metrowagonmash delivers 12 updated metro cars to Sofia Metro, Bulgaria October 27, 2021 | Europe News Russia-based Metrowagonmash, an engineering company, has delivered 12 new 81-717.4 / 714.4 series metro cars to Sofia Metro in Bulgaria. Metrowagonmash sent eight new modernised metro cars early in 20... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password